The Spectra Gutenberg Blocks plugin for WordPress contains a stored cross-site scripting vulnerability (CWE-79) in its Testimonial block due to improper neutralization of user input during web page generation. Authenticated users with contributor-level privileges or above can inject arbitrary JavaScript code that executes in the context of other users viewing the page. This vulnerability affects all plugin versions up to 2.12.8. The CVSS 3.1 base score is 6.4, reflecting network attack vector, low attack complexity, required privileges at the contributor level, no user interaction, and impacts on confidentiality and integrity with no availability impact. No patch or official fix information is currently available.

An attacker with contributor-level access or higher can inject malicious scripts that execute in the browsers of users who view the compromised pages. This can lead to theft of sensitive information, session hijacking, or other client-side attacks impacting confidentiality and integrity. There is no reported impact on availability. No known exploits in the wild have been reported to date.

Patch status is not yet confirmed—check the vendor advisory for current remediation guidance. Until a fix is available, restrict contributor-level access to trusted users only and consider disabling or limiting use of the Testimonial block. Monitor official channels from brainstormforce for updates or patches addressing this vulnerability.